Method for generating a graph lattice from a corpus of one or more data graphs
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[0025]Large families of complex image features, in the form of subgraphs, can be built out of simpler ones through construction of a graph lattice (i.e., a hierarchy of related subgraphs linked in a lattice). By supporting large numbers of these feature subgraphs, image structure can be captured through exact graph matching. Thus, as will be seen, a graph lattice facilitates efficient graph matching notwithstanding image noise and variability, which advantageously facilitates efficient image clustering, classification, retrieval, repeated structure finding and novelty detection. The following systems and methods are described in the domain of rectilinear line art, specifically to address practical problems of document form recognition. However, it is to be understood, the concepts are applicable to images other than rectilinear line art, which are capable of being broken down into a set of primitives.
1.0 Overview of a Graph Lattice
[0026]The basic framework, called “graph lattice,” i...
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